小编Vla*_*adN的帖子

我有下一个arhitecture:

public class Element
{
    public uint Id { get; set; }
    public ICollection<ElementDetails> elementDetails { get; set; }
}
public class ElementDetails
{
    public string ElementTitle { get; set; }
    public string Content { get; set; }
}

而且List<Element> someList它包含数百个元素.我正在尝试获取包含某个文本的ElementTitle(字符串)列表(我称之为"种子").我想要实现它是一种先行者.这是我的尝试:

List<Element> suggestedElements = someList.Where(s => s.elementDetails.Any(ss => ss.ElementTitle.Contains(seed))).ToList();
List<string> suggestions = suggestedElements .SelectMany(t => t.elementDetails.Select(x => x.ElementTitle)).ToList() }); // contains all ElementTitle, including those ElementTitle that don't contain the "seed"...

我怎样才能摆脱那些不含种子的元素？

我有两个连接在不同USB控制器上的kinect传感器.如果我在它们两个上启用骨架流,当我在第二个传感器上调用start方法时会出现异常:

This API has returned an exception from an HRESULT: 0x830100AA

堆栈跟踪:

   at Microsoft.Kinect.KinectExceptionHelper.CheckHr(Int32 hr)
   at Microsoft.Kinect.NuiSensor.NuiInitialize(UInt32 dwFlags)
   at Microsoft.Kinect.KinectSensor.Initialize(SensorOptions options)
   at Microsoft.Kinect.KinectSensor.Start()

为什么我无法从两个运动中进行骨骼跟踪？

PS我正在使用Kinect for Windows SDK 1.5

谢谢!

我有一个用C++写的函数和下一个标题:

void EncodeFromBufferIN(void* bufferIN,int bufferINSize, unsigned char*  &bufferOUT, int &bufferOUTSize);

我已经像这样编辑了.h和.cpp文件,以便能够通过在C#中导入DLL来调用该函数:

**EncodeFromBufferIN.h**
extern "C" {
     __declspec(dllexport) void EncodeFromBufferIN(void* bufferIN, int bufferINSize, unsigned char*  &bufferOUT, int &bufferOUTSize);
}
**EncodeFromBufferIN.cpp**
extern void EncodeFromBufferIN(void* bufferIN, int bufferINSize, unsigned char*  &bufferOUT, int &bufferOUTSize){
    // stuff to be done
}

但现在我的问题是我不知道如何在C#中调用该函数.我在C#中添加了下一个代码,但不确定如何将参数传递给函数.

[DllImport("QASEncoder.dll")]
        unsafe public static extern void EncodeFromBufferIN(void* bufferIN, int bufferINSize, out char[] bufferOUT, out int bufferOUTSize);

bufferIN和bufferOUT应该是字符串,但如果我调用这样的函数:

public string prepareJointsForQAS()
{
   string bufferIN = "0 0 0 0 0";
   char[] bufferOUT;
   int bufferOUTSize;
   EncodeFromBufferIN(bufferIN, …